Floor-jack.



G. J. HOELZER.

FLOORJACK.

APPLICATION FILED MAR. 25. 1918.

1,278,489. Patented July 23, 1918.

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G. J. HOELZER.

FLOOR JACK.

APPLICATION FILED MAR.25.19IB

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INVENTOR UNITED STATES PATENT OFFICE.

GEORGE J. HOELZER, OF OKLAHOMA, OKLAHOMA.

FLOOR-JACK.

Application filed March 25, 1918.

To all whom it may concern:

Be it known that I, Gnonon J. Honnznn, a citizen of the United States, and a resident of the city, county, and State of Oklahoma, have invented new and useful Improvements in Floor-Jacks, of which the following is a specification, reference being had to the drawings accompanying and forming a part of the same.

This invention relates to floor-laying jacks, and consists in means whereby the jack may be properly and definitely placed,

and cause a piece of flooring to be sent homebefore nailing, and this is especially accomplished by way of a simplified, but effective leverage system that can withstand the most obstinate and warped strip of flooring.

An additional object of the invention rests in the providing of means for fixing the jack in position for operation.

Other objects of the invention will appear from a more complete reading of the following specification, and by consulting the sheets of drawings, accompanying and forming a part of the specification.

On these drawings,

Figure 1 is an elevation view of the beak and push bar of the jack;

Fig. 2 is a plan view of the same;

Fig. 3 is a view similar to Fig. 1 with position of the elements changed;

Fig. 4 is a plan view of that changed position;

Fig. 5 is an elevation view of a lever to be employed in connection with the structure,

Fig. 6 is an edge view thereof,

Fig. 7 is a view of a lever with a gravity operating hammer-sleeve,

Fig. 8 is an edge view thereof, and

Fig. 9 is a view similar to Fig. 7 but showing the side reversed to that of said Fig. 7

In these several views, similar characters of reference indicate similar parts.

Referring to said figures, 10 represents a bar from which depends, preferably, at an angle a beak 11 which, as will be later seen, is to be driven into a surface for holding the bar 10 in a substantial and fixed position. Proceeding laterally of the bar is a bearing 12 through which a bar 13 will reciprocate and to the free end of this bar 13 is movably applied a shoe 14 which may be provided with a tongue-receiving groove 15 shown in dotted lines in Figs. 2 and i and in which groove shown in dotted lines are Specification of Letters Patent.

Patented July 23, 1918.

Serial No. 224,579.

spurs 16 for keeping the shoe 1 1 from slipping.

This shoe may be applied to the bar 13 in any suitable manner, and in the present in stance the free end of the bar 13 is dented as at 17, to receive two rivets 18 and 19. This construction permits the shoe 141 to re main connected to the bar 13 but at the same time permits of any movement that may be necessary between said bar and said shoe.

A lever 20 is pivoted at 21, preferably upon a bolt, passing through the bar 10 and the free end 22 of this lever 20 is bolted as at 23 to the free end of the bar 13; thus, as the movement of the lever 20 is made, and the beak 11 is implanted into a surface the bar 13 will correspondingly move to lengthen the distance between the beak 11 and the shoe 1 1 and shorten the same according as the lever 20 is moved.

The operation of the device thus described is simple, and may be stated as follows:- The jack being placed, the beak 11 being indented or driven into a surface, the lever is pushed from the operator standing in front of the device, sending the bar and shoe 1 1 forward, to drive the floor-strip home.

It may happen in working in hard wood, or, under various circumstances, that it may be necessary to drive the beak into the surface by means other than ordinary pres sure. If this is true, then means are provided for accomplishing this function, and consists in a substitute lever appliance, to be applied in lieu of the lever described, and by simply removing the nuts on the bolts 21 and 23 respectively, when lever 21 may be applied. Upon this lever 24 is a sliding element 25 having a lower facing or bearing 26 that in contour is designed to fit the head 27 of the bar 10, and this sliding element, while it may be made in any manner suitable for convenience and durability it is preferably made of an angle-iron surrounding partially the lever 24 and which may be guided in its movement by a stop roller 27 as well as by the sides of the lever.

No use to specially outline the construction of this arrangement, as any way of applying the sliding part to the lever 241 may suffice, but it may be stated that in the present case a plate 28 has secured to it two angle irons held in place by screws 31.

Thus, when it is necessary to drive the beak 1 to a holding position in hard surfaces, the beak is placed and the sliding hammer raised and forced doWn until the face 26 and 1. A floor-jack, consisting of a movable bar, a member provided Witha beak, a lever for operating the bar, and means carried by the lever for driving the beak into surfaces.

2. A floor jack, consisting of a movable bar, a shoe therefor, a member provided With a beak, a lever for operating the bar and forcing the shoe against a surface, and means carried by the lever for driving the beak into surfaces.

8. A floor'jack, consisting of a movable bar, a movably mounted shoe applied thereto, a member provided with a head having a beak, a lever pivoted to said head, and means carried by the lever for impact upon the head for driving the beak into surfaces.

In testimony whereof I have set my hand and seal this 21 day of March, in the year of our Lord, nineteen hundred and eighteen;

GEORGE J. HOELZER.

Oopies of this patent may be obtained. for five cents each, by addressing the Commissioner of Patents, u Washington, D. (7. 

